Gaya APA
Poe, Roy W. (1994).
Handbook Business Letters (ed 3).
USA:
McGraw Hill.
Gaya Chicago
Poe, Roy W.
Handbook Business Letters.
ed 3
USA:
McGraw Hill,
1994.
Text.
Gaya MLA
Poe, Roy W.
Handbook Business Letters.
ed 3
USA:
McGraw Hill,
1994.
Text.
Gaya Turabian
Poe, Roy W.
Handbook Business Letters.
ed 3
USA:
McGraw Hill,
1994.
Print.